Wanted to share this. I've adapted an old fork of the python-oauth2 library
to support hitting the Foursquare v2 API.
WARNING: This code comes with the caveat-emptoriest caveat emptor that ever
caveat-emptored. It's not pretty, but it does the job. Hopefully someone
with more time will make something as cohesive as the v1 API's foursquare.py
Doubleforked OAuth library here: https://github.com/rodbegbie/python-oauth2
Example of it in action here: https://gist.github.com/785352